原创 tablespace occuped with autoextent managment and tempfile
SELECT ddf.tablespace_name, SUM( distinct ddf.ddfbytes ) / 1048576 maxp
2020-02-21 08:17:02
原创 Reducing CPU problem caused due to high buffer gets (after large delete)
Reducing CPU problem caused due to high buffer gets. Couple of month’s back I was working on tuning one of the telecom
2020-02-21 08:17:02
原创 size tablespace autoextend and temp managed
SELECT tablespace_name, round(SUM(used)/1024/1024) USED_MB, round((SUM(total)/1024/1024),0) MAXSIZE_MB, TO_CHAR(100*SU
2020-02-21 08:17:01
原创 memcached相關技術
1.概述 Memcached 是一個高性能的分佈式內存對象緩存系統，用於動態Web應用以減輕數據庫負載。它通過在內存中緩存數據和對象來減少讀取數據庫的次數，從而提供動態、數據庫驅動網站的速度。Memcached基於一個存儲
2018-08-26 01:54:30
1
原创 Tokyo Cabinet與 Tokyo Tyrant
Tokyo Cabinet 是日本人 Mikio Hirabayashi開發的一款 DBM 數據庫，該數據庫讀寫非常快，哈希模式寫入100萬條數據只需0.643秒，讀取100萬條數據只需0.773秒，是 Berkeley DB 等 DBM
2018-08-26 01:54:30
原创 C++庫大全
基礎類1、 Dinkumware C++ Library 參考站點：http://www.dinkumware.com P.J. Plauger編寫的高品質的標準庫。P.J. Plauger博士是Dr. Dobb's程序設計傑出獎的獲得
2018-08-26 01:54:29
原创 List sessions and some details about them
set linesize 145set pagesize 1000set trimout onset trimspool onSet Feedback offset timing offset verify
2018-08-26 01:54:28
5
原创 show log file info and log switches
column day format a16 heading 'Day' column d_0 format a3 heading '00' column d_1 format a3 heading '01' column d_2 f
2018-08-26 01:54:27
原创 Shows the reason for multiple statement childs in shared pool
rem output only those statements that have more than 5 versions:define versions=5select version_count,address,hash_valu
2018-08-26 01:54:27
原创 Capture the total CPU consumptions for an Instance
Create a file as bellow named cpu.sh--------------------:/u01/app/oracle=>cat cpu.sh for para1 in $*d
2018-08-26 01:54:27
2
原创 Opt_param: a new optimizer hint for 10gR2
"OPT_PARAM" is a new optimizer hint introduced in 10gR2. This hint behaves the same way as setting a pa
2018-08-26 01:54:27
3
原创 Quick check of asm disk space
#!/bin/bash. /home/oracle/set_oraenvsid="+ASM1"echo "Check Space on "$sidexport ORACLE_SID=$sidasmcmd << EOFlsdgEOF
2018-08-26 01:54:27
2
原创 put your own progress information in V$SESSION_LONGOPS
If only more developers used the DBMS_APPLICATION_INFO package. As a DBA I often see requests to investigate why a par
2018-08-26 01:54:27
1
原创 Explain plan for last executed statement
define plan_table=PLAN_TABLEset linesize 132 pagesize 1000 feedback off verify off column statement_id
2018-08-26 01:54:27
原创 Retreive new hashvalue and display their load
alter session set nls_territory=france;alter session set nls_numeric_characters=", ";WITHp AS ( SELECT to_date(
2018-08-26 01:54:25